It has been four years since Kim Soo Hyun’s last film, Secretly, Greatly. His character in Real enjoys chewing gum, which made Kim Soo Hyun quip, "My right jawbone really hurt!"

There have been rumours that this will be his last project before he enlists for his mandatory military service. Kim Soo Hyun clarified he has yet to receive notice on when he will enlist. "If possible, I want to shoot another TV drama or film before my military duties start", he shared.

Sulli also spoke about her erotic scenes in the movie. "It’s a big challenge to me; I felt a lot of pressure while we were filming. However, it's an interesting script and those scenes were necessary. This has been a meaningful experience to me."